JOBSEARCHER

Java Full Stack Payment Integration Engineer

PhaxisNew York, NYMay 21st, 2026
Salary is 160k to 185k + bonusWe are seeking a skilled Java Full Stack Payment Integration Engineer to design, develop, and support secure, scalable payment processing and integration solutions. This role will focus on building end-to-end payment workflows, integrating third-party payment gateways, and developing modern full-stack applications that support high-volume transaction environments.Key ResponsibilitiesDesign and develop backend services using Java (Spring Boot preferred) to support payment processing and transaction workflows.Build responsive front-end applications using Angular, React, or similar frameworks.Integrate with third-party payment gateways, processors, and financial APIs.Develop and maintain RESTful APIs and microservices architectures.Ensure secure handling of payment data in compliance with PCI-DSS and other regulatory standards.Implement transaction logging, reconciliation, and reporting features.Troubleshoot payment failures, integration issues, and performance bottlenecks.Collaborate with product, compliance, and finance teams to implement new payment features and enhancements.Participate in code reviews, testing, and CI/CD deployment pipelines.Required QualificationsStrong backend development experience with Java and Spring Boot.Strong front-end experience with Angular, React, or similar frameworks.Hands-on experience integrating payment gateways (Stripe, PayPal, Adyen, Authorize.Net, etc.).Experience working with REST APIs, microservices, and distributed systems.Solid understanding of secure coding practices and payment compliance standards (PCI-DSS).Strong SQL/database experience (Oracle, MySQL, PostgreSQL, or similar).Preferred QualificationsExperience with cloud platforms (AWS, Azure, or GCP).Familiarity with message queues (Kafka, RabbitMQ) for payment event processing.Experience in fintech, banking, or high-volume e-commerce environments.Knowledge of tokenization, fraud detection integrations, or multi-currency payment systems.